The article "Measuring and Understanding the Aging of Kraft Insulating Paperin Power Transformers" (IEEE electrical Insul. Mag. 1996:28-34) contained the followingobservations on degree of polymerization for paper specimens for which viscosity timeconcentration fell in a certain middle range:418 421 421 422 425 427 431 434 437 439 446 447 448 453 454 463 465a. It is plausible that the given sample observations were selected from a normal distribution?b. Calculate a two-sided 95% confidence interval for true average degree of polymerization (asdid the authors of the article). Does the interval suggest that 440 is a plausible value fortrue average degree of polymerization. What about 450? a. Use the first 20 duplicate observations in the data set below to construct Shewhart, Range,and Cusum charts. Plot the next ten observations and decide whether the process hasremained in control. Compare the purpose and performance of the three charts.b. Use the first 20 duplicate observations in the data set below to construct an MA(4) movingaverage chart and an EWMA chart for a = 0.6. Plot the next ten observations and decidewhether the process has remained in control. Compare the purpose and performance of thecharts.Observ._yiy?Observ.yiy?15.88 5.61165.70 5.9625.64 5.63174.90 5.6535.09 5.12185.40 6.7146.045.36195.32 5.6754.66 5.24204.86 4.346.5.58 4.50216.01 5.5776.07 5.41225.55 5.5585.316.30235.44 6.4095.48 5.83245.05 5.7210116.63 5.23256.04 4.625.28 5.91265.63 4.62125.97 5.81275.67 5.70135.82 5.19286.33 6.58145.745.41295.94 5.94155.97 6.60306.68 6.09

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a. To check whether the given sample observations follow normal distribution or not, plot the…

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The article "Measuring and Understanding the Aging of Kraft Insulating Paper in Power Transformers" (IEEE electrical Insul. Mag. 1996:28-34) contained the following observations on degree of polymerization for paper specimens for which viscosity time concentration fell in a certain middle range: 418 421 421 422 425 427 431 434 437 439 446 447 448 453 454 463 465 a. It is plausible that the given sample observations were selected from a normal distribution? b. Calculate a two-sided 95% confidence interval for true average degree of polymerization (as did the authors of the article). Does the interval suggest that 440 is a plausible value for true average degree of polymerization. What about 450?

The article "Measuring and Understanding the Aging of Kraft Insulating Paper in Power Transformers" (IEEE electrical Insul. Mag. 1996:28-34) contained the following observations on degree of polymerization for paper specimens for which viscosity time concentration fell in a certain middle range: 418 421 421 422 425 427 431 434 437 439 446 447 448 453 454 463 465 a. It is plausible that the given sample observations were selected from a normal distribution? b. Calculate a two-sided 95% confidence interval for true average degree of polymerization (as did the authors of the article). Does the interval suggest that 440 is a plausible value for true average degree of polymerization. What about 450?

MATLAB: An Introduction with Applications

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Publisher:Amos Gilat

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An article contained the following observations on degree of polymerization for paper specimens for which viscosity times concentration fell in a certain middle range: 415 420 422 423 426 429 432 435 436 439 446 447 448 452 459 463 464 (a) Construct a boxplot of the data. 420 430 440 450 460 420 430 440 450 460 420 430 440 450 460 420 430 440 450 460 Comment on any interesting features. (Select all that apply.) There are no outliers. There is little or no skew. There is one outlien The data is strongly skewed. The data appears to be centered near 439. The data appears to be centered near 429. (b) Is it plausible that the given sample observations were selected from a normal distribution? O Yes ○ No (c) Calculate a two-sided 95% confidence interval for true average degree of polymerization. (Round your answers to two decimal places.) Does the interval suggest that 445 is a plausible value for true average degree of polymerization? O Yes ○ No Does the interval suggest that 451 is a…
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An article contained the following observations on degree of polymerization for paper specimens for which viscosity times concentration fell in a certain middle range: 415 421 422 423 426 429 431 434 436 439 445 446 448 453 455 463 464 (a) Construct a boxplot of the data. O 420 420 430 430 440 440 450 The data appears to be centered near 438. The data is strongly skewed. There is one outlier. 450 Comment on any interesting features. (Select all that apply.) There are no outliers. The data appears to be centered near 428. There is little or no skew. 460 420 420 430 430 (b) Is it plausible that the given sample observations were selected from a normal distribution? Yes No 440 440 450 450 460 460 (c) Calculate a two-sided 95% confidence interval for true average degree of polymerization. (Round your answers to two decimal places.)
An article contained the following observations on degree of polymerization for paper specimens for which viscosity times concentration fell in a certain middle range: 418 420 422 422 425 428 431 434 437 438 445 446 449 451 458 462 465 (a) Construct a boxplot of the data. Comment on any interesting features. (Select all that apply.) The data appears to be centered near 438.There are no outliers.The data is strongly skewed.There is little or no skew.The data appears to be centered near 428.There is one outlier. (b) Is it plausible that the given sample observations were selected from a normal distribution? YesNo (c) Calculate a two-sided 95% confidence interval for true average degree of polymerization. (Round your answers to two decimal places.) , Does the interval suggest that 445 is a plausible value for true average degree of polymerization? YesNo Does the interval suggest that 456 is a plausible value? YesNo You…
The accompanying summary data on CeO₂ particle sizes (nm) under certain experimental conditions was read from a graph in an article. 4.0-<4.5 4.5-5.0 27 6.5-<7.0 3 34 7.0-<7.5 4 3.0-3.5 5 5.5-6.0 13. 3.5-4.0 16 6.0-6.5 8 (a) What proportion of the observations are less than 5? (Round your answer to three decimal places.) 0.617 O (b) What proportion of the observations are at least 6? (Round your answer to three decimal places.) 0.120 (c) Construct a histogram with relative frequency on the vertical axis. Percent Percent 25 25 20 20 15 15 10 10 5 5 O 3 4 5 6 7 8 Particle Size (nm). (d) Construct a histogram with density on the vertical axis. Density 0.5 0.4 0.3 0.2 0.1 r 3 4 5 6 7 8 5.0-<5.5 22 7.5-8.0 1 O Particle Size 3 (nm) O Density 0.5 0.4 0.3 0.2 0.1 4 5 6 7 Compare the density histogram to the histogram in part (c). O The density histogram is less symmetrical. 8 3 4 5 6 7 8 O The density histogram is more positively skewed. The density histogram is less negatively skewed. O Both…
An article contained the following observations on degree of polymerization for paper specimens for which viscosity times concentration fell in a certain middle range: 416 421 422 423 426 428 430 434 437 439 446 447 449 453 456 462 464 Comment on any interesting features. (Select all that apply.) __The data appears to be centered near 438. __There are no outliers. __There is little or no skew. __There is one outlier. __The data is strongly skewed. __The data appears to be centered near 428. (c) Calculate a two-sided 95% confidence interval for true average degree of polymerization. (Round your answers to two decimal places.) (______,_______)